Support stand



FIG. 1 is a front side, perspective view of the support stand;

FIG. 2 is a front view of the support stand;

FIG. 3 is a rear view of the support stand;

FIG. 4 is a left side view of the support stand;

FIG. 5 is a right side view of the support stand;

FIG. 6 is a top view of the support stand; and,

FIG. 7 is a bottom view of the support stand. 

The ornamental design for a support stand, as shown and described. 